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add spacing support to Tileset #25

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add spacing support to Tileset #25

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11 changes: 7 additions & 4 deletions src/ldtk/Tileset.hx
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Original file line number Diff line number Diff line change
Expand Up @@ -29,7 +29,8 @@ class Tileset {
/** Spacing between each tile in pixels */
public var spacing: Int;

var cWid(get,never) : Int; inline function get_cWid() return Math.ceil(pxWid/tileGridSize);
var cWid(get,never) : Int; inline function get_cWid() return
Math.ceil(pxWid/(tileGridSize + spacing));

/** Untyped Enum based tags (stored as String). The "typed" getter method is created in macro. **/
var untypedTags : Map< String, Map<Int,Int> >;
Expand Down Expand Up @@ -67,22 +68,24 @@ class Tileset {
Get X pixel coordinate (in atlas image) from a specified tile ID
**/
public inline function getAtlasX(tileId:Int) {
return ( tileId - Std.int( tileId / cWid ) * cWid ) * tileGridSize;
return ( tileId - Std.int( tileId / cWid ) * cWid ) * (tileGridSize +
spacing);
}

/**
Get Y pixel coordinate (in atlas image) from a specified tile ID
**/
public inline function getAtlasY(tileId:Int) {
return Std.int( tileId / cWid ) * tileGridSize;
return Std.int( tileId / cWid ) * (tileGridSize + spacing);
}

/**
Resolve an atlas coordinate to a tile ID. The result is only relevant if the coordinates are over a tile (ie. in atlas bounds, not in margins etc.).
WARNING: tile spacing is not supported yet!
**/
public inline function getTileIdFromCoords(pixelX:Int, pixelY:Int) {
return Std.int( (pixelX-padding) / tileGridSize ) + cWid * Std.int( pixelY / tileGridSize );
return Std.int( (pixelX-padding) / (tileGridSize + spacing) ) + cWid
* Std.int( pixelY / (tileGridSize + spacing) );
}


Expand Down